//////////////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2011, Xi Minggao <brooks.xi@gmail.com>
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice, this
//     list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
// SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
// WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//////////////////////////////////////////////////////////////////////////////////////////

#ifndef KIWII_EVENT_LOOP_BASE
#define KIWII_EVENT_LOOP_BASE

#include <functional>
#include <sys/time.h>

namespace kiwii {
  namespace net {

    static unsigned int const EV_NONE = 0x0;
    static unsigned int const EV_READABLE = 0x01;
    static unsigned int const EV_WRITABLE = 0x02;
    static unsigned int const EV_ALL = 0x04;

    class EventLoopBase;

    typedef std::function<void(EventLoopBase& el, int fd, unsigned int firedEvents)> IOEventHandler;

    //switch (return value of TimeEventHandler):
    //  case >0: the handler will be triggered again in milliseconds from now
    //  case <=0: remove this handler
    typedef std::function<long long(EventLoopBase& el, int id)> TimeEventHandler;

    class EventLoopBase {
    public:
      virtual ~EventLoopBase() {}

      virtual void setIOEvent(int fd, unsigned int events, IOEventHandler const& handler) = 0;
      virtual void delIOEvent(int fd, unsigned int events) = 0;
      virtual int setTimeEvent(long long milliseconds, TimeEventHandler const& handler) = 0;

      virtual void rock() = 0;
      virtual void stop() = 0;
    };
  }
}

#endif
